Building the R binaries for buildpack
The binaries for the build pack can be built in several ways.
In each case, the scripts support specifying the R version and optionally the build version number to use.
R-3.0.4 on Heroku
$ build_with_heroku 3.0.4
R-3.1.0 on Heroku, with a build version of
$ build_with_heroku 3.1.0 20140101_31
Building R on Heroku
$ build_with_heroku [R_VERSION [BUILD_NO]]
Building R on Vagrant
This method uses a Vagrant virtual machine, which runs a cedar like stack so that you can develop, debug and test the build scripts in an interactive way before building using the Heroku method.
$ build_with_vagrant [R_VERSION [BUILD_NO]]